478
FNCA52 TJSJ 090730
FWFSJU
FIRE WEATHER PLANNING FORECAST FOR PUERTO RICO
NATIONAL WEATHER SERVICE SAN JUAN PR
330 AM AST THU APR 9 2026
DISCUSSION
NO FIRE DANGER IS EXPECTED TODAY.
PRZ014-092000-
SOUTHEAST COASTAL PLAINS-
330 AM AST THU APR 9 2026
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 10 10
TEMP (24H TREND) 88 (+2) 71 (-3) 88
RH % (24H TREND) 54 (-7) 91 (+1) 49
WIND 20FT/EARLY(MPH) E 16 E 12 E 14
WIND 20FT/LATE(MPH) SE 16 NE 11 SE 14
MIXING HGT(FT-AGL/MSL)4700 4350
TRANSPORT WND (MPH) E 16 E 16
VENT RATE (KT-FT) 65800 60900
DISPERSION 5 5
DSI 6 4 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ015-092000-
SOUTHERN HILLS-
330 AM AST THU APR 9 2026
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 0 20
TEMP (24H TREND) 85 (+4) 67 (-4) 84
RH % (24H TREND) 65 (-6) 98 (+4) 61
WIND 20FT/EARLY(MPH) E 12 E 11 E 11
WIND 20FT/LATE(MPH) SE 12 E 10 SE 11
MIXING HGT(FT-AGL/MSL)5170 5280
TRANSPORT WND (MPH) E 14 E 12
VENT RATE (KT-FT) 62040 52800
DISPERSION 5 5
DSI 6 3 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ016-092000-
NORTH COASTAL PLAINS-
330 AM AST THU APR 9 2026
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 10 20
TEMP (24H TREND) 88 (0) 70 (-3) 88
RH % (24H TREND) 61 (-3) 99 (+3) 59
WIND 20FT/EARLY(MPH) E 12 E 12 E 13
WIND 20FT/LATE(MPH) E 17 E 11 E 17
MIXING HGT(FT-AGL/MSL)4960 5030
TRANSPORT WND (MPH) E 12 E 13
VENT RATE (KT-FT) 49600 55330
DISPERSION 5 5
DSI 6 5 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ017-092000-
NORTHERN HILLS-
330 AM AST THU APR 9 2026
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS NONE SHOWERS
CHANCE PRECIP (%) 60 0 50
TEMP (24H TREND) 88 (+1) 68 (-3) 87
RH % (24H TREND) 61 (-2) 98 (+2) 60
WIND 20FT/EARLY(MPH) E 10 E 10 E 10
WIND 20FT/LATE(MPH) E 13 E 9 E 13
MIXING HGT(FT-AGL/MSL)5580 6000
TRANSPORT WND (MPH) SE 9 E 8
VENT RATE (KT-FT) 44640 42000
DISPERSION 5 5
DSI 6 3 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ018-092000-
WEST COAST-
330 AM AST THU APR 9 2026
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 50 30 50
TEMP (24H TREND) 89 (+1) 70 (-2) 89
RH % (24H TREND) 60 (-5) 98 (+2) 58
WIND 20FT/EARLY(MPH) E 14 E 12 E 13
WIND 20FT/LATE(MPH) E 14 E 12 E 13
MIXING HGT(FT-AGL/MSL)4740 4790
TRANSPORT WND (MPH) SE 12 E 9
VENT RATE (KT-FT) 47400 38320
DISPERSION 5 5
DSI 6 4 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ019-092000-
EASTERN INTERIOR-
330 AM AST THU APR 9 2026
TODAY TONIGHT FRI
CLOUD COVER PCLDY PCLDY MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 30 10
TEMP (24H TREND) 86 (+2) 69 (-3) 85
RH % (24H TREND) 64 (-5) 99 (+3) 62
WIND 20FT/EARLY(MPH) SE 12 E 12 E 13
WIND 20FT/LATE(MPH) SE 12 E 12 E 13
MIXING HGT(FT-AGL/MSL)5790 5940
TRANSPORT WND (MPH) SE 13 SE 13
VENT RATE (KT-FT) 63690 65340
DISPERSION 5 5
DSI 6 4 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ022-092000-
LUQUILLO MOUNTAIN RANGE-
330 AM AST THU APR 9 2026
TODAY TONIGHT FRI
CLOUD COVER PCLDY PCLDY MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 30 10
TEMP (24H TREND) 81 (+3) 67 (-3) 81
RH % (24H TREND) 71 (-7) 100 (+1) 69
WIND 20FT/EARLY(MPH) SE 11 E 10 E 12
WIND 20FT/LATE(MPH) SE 11 E 9 SE 12
MIXING HGT(FT-AGL/MSL)4350 4490
TRANSPORT WND (MPH) SE 15 SE 16
VENT RATE (KT-FT) 56550 62860
DISPERSION 5 5
DSI 6 5 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ023-092000-
CENTRAL MOUNTAIN RANGE-
330 AM AST THU APR 9 2026
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLEAR PCLDY
PRECIP TYPE TSTMS NONE SHOWERS
CHANCE PRECIP (%) 60 0 60
TEMP (24H TREND) 86 (+5) 65 (-4) 84
RH % (24H TREND) 64 (-7) 99 (+3) 62
WIND 20FT/EARLY(MPH) SE 9 E 6 E 9
WIND 20FT/LATE(MPH) SE 10 E 8 SE 9
MIXING HGT(FT-AGL/MSL)5990 6900
TRANSPORT WND (MPH) E 9 E 6
VENT RATE (KT-FT) 47920 34500
DISPERSION 5 5
DSI 6 2 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ024-092000-
CAYEY MOUNTAIN RANGE-
330 AM AST THU APR 9 2026
TODAY TONIGHT FRI
CLOUD COVER PCLDY PCLDY MCLEAR
PRECIP TYPE SHOWERS SHOWERS NONE
CHANCE PRECIP (%) 30 30 0
TEMP (24H TREND) 81 (+3) 68 (-3) 81
RH % (24H TREND) 72 (-5) 100 (+1) 68
WIND 20FT/EARLY(MPH) E 11 E 9 E 10
WIND 20FT/LATE(MPH) SE 11 E 9 E 10
MIXING HGT(FT-AGL/MSL)4990 4880
TRANSPORT WND (MPH) E 14 E 14
VENT RATE (KT-FT) 59880 58560
DISPERSION 5 5
DSI 6 3 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ025-092000-
VIEQUES-
330 AM AST THU APR 9 2026
TODAY TONIGHT FRI
CLOUD COVER PCLDY PCLDY MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 30 10
TEMP (24H TREND) 85 (0) 73 (-2) 85
RH % (24H TREND) 63 (-3) 93 (+1) 62
WIND 20FT/EARLY(MPH) E 13 E 13 E 14
WIND 20FT/LATE(MPH) E 14 E 14 E 14
MIXING HGT(FT-AGL/MSL)2900 3570
TRANSPORT WND (MPH) E 17 E 17
VENT RATE (KT-FT) 43500 53550
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ026-092000-
CULEBRA-
330 AM AST THU APR 9 2026
TODAY TONIGHT FRI
CLOUD COVER MCLEAR PCLDY MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 30 20
TEMP (24H TREND) 87 (+1) 74 (-2) 87
RH % (24H TREND) 64 (-5) 94 (+2) 61
WIND 20FT/EARLY(MPH) E 13 E 13 E 14
WIND 20FT/LATE(MPH) E 14 E 14 E 14
MIXING HGT(FT-AGL/MSL)2940 3340
TRANSPORT WND (MPH) E 17 E 18
VENT RATE (KT-FT) 44100 53440
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ027-092000-
SOUTHWEST COASTAL PLAINS AND MONA ISLAND-
330 AM AST THU APR 9 2026
TODAY TONIGHT FRI
CLOUD COVER MCLEAR MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 30 10
TEMP (24H TREND) 90 (+3) 71 (-3) 89
RH % (24H TREND) 50 (-10) 95 (+3) 48
WIND 20FT/EARLY(MPH) E 19 E 16 E 18
WIND 20FT/LATE(MPH) SE 20 E 16 SE 19
MIXING HGT(FT-AGL/MSL)4700 4740
TRANSPORT WND (MPH) E 18 E 17
VENT RATE (KT-FT) 75200 71100
DISPERSION 5 5
DSI 6 5 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
VIZ001-092000-
SAINT THOMAS AND SAINT JOHN-
330 AM AST THU APR 9 2026
TODAY TONIGHT FRI
CLOUD COVER MCLEAR PCLDY MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 30 20
TEMP (24H TREND) 86 (+2) 73 (-3) 85
RH % (24H TREND) 61 (-7) 94 (+3) 62
WIND 20FT/EARLY(MPH) E 16 E 14 E 16
WIND 20FT/LATE(MPH) E 16 E 16 E 14
MIXING HGT(FT-AGL/MSL)2790 3430
TRANSPORT WND (MPH) E 20 E 20
VENT RATE (KT-FT) 47430 58310
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
VIZ002-092000-
ST CROIX-
330 AM AST THU APR 9 2026
TODAY TONIGHT FRI
CLOUD COVER MCLEAR PCLDY MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 20 30
TEMP (24H TREND) 86 (+1) 72 (-4) 86
RH % (24H TREND) 64 (-5) 94 (+3) 62
WIND 20FT/EARLY(MPH) E 14 E 14 E 14
WIND 20FT/LATE(MPH) E 16 E 14 E 14
MIXING HGT(FT-AGL/MSL)4100 4650
TRANSPORT WND (MPH) E 20 E 18
VENT RATE (KT-FT) 69700 74400
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
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